VTEC/LS help

Hey, i have a 92 LS, and am thinkin about putting on a VTEC head… which head is most compatable/powerful? What else will need to be replaced? Should I throw in new camshafts while I’m at it, or should I replace other stuff

I was thinkin about doin the same thing I have a 93 ls, What all is needed? i know that the bottem end should be built to hell b/c the connecting rods cant handle that much force. What rods do you guys recommend? what about an intake manifold?